TDA5250XT Infineon Technologies, TDA5250XT Datasheet - Page 77
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TDA5250XT
Manufacturer Part Number
TDA5250XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TDA5250XT.pdf
(94 pages)
Specifications of TDA5250XT
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Operating Supply Voltage (min)
2.1V
Operating Supply Voltage (max)
5.5V
Lead Free Status / Rohs Status
Compliant
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Figure 3-39
3.10.5
Applying the test setup in Figure 3-36 even a wide offset in the received frequency spectrum results
only in a slight decrease of receiving sensitivity. At an offset of 100kHz one of the two 50kHz FSK
peaks is at the 3dB border of the IQ filter (150kHz), which is the reason for the decline of the
sensitivity (see point A in Figure 3-40).
A frequency offset of 50kHz (FSK deviation: 50kHz) increases the data jitter of the demodulated
signal and therefore results in little loss of sensitivity (see point B in Figure 3-40).
In this case one of the peaks of the FSK-spectrum lies in the DC-blocking notch of the baseband
limiters.
Figure 3-40
Data Sheet
Sensitivity at Frequency Offset
Datarates and Sensitivity
BER Frequency Offset
77
BER_FrequOffset_FSK_3V..wmf
TDA5250 D2
Version 1.7
Application
BER_Datarate.wmf
2007-02-26
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